Questions
Which of the following is/are hybrid instrument(s)?
- H-files
- Unifile
- Both 1 and 2
- Flexofile
- S-file
The first generation apex locators are
- resistance type
- impedance type
- both 1 and 2
- frequency type
- all of the above
According to WHO nomenclature, pulp exposures of crowns come under __________ class.
- 873.60
- 873.61
- 873.62
- 873.63
- 873.64
Which of the following recent materials is considered to be the material of choice for perforation repair?
- MTA
- GIC
- Calcium hydroxide
- Zinc oxide eugenol
- Dental compomer
Which of the following is/are corticosteroid-antibiotic paste(s) used as canal dressing material?
- Corticodont
- Ledermix
- Both 1 and 2
- Anticortico
- None of the above
Which of the following endo instruments has maximum flexibility and cutting efficiency?
- H-file
- Unifile
- K-file
- K-flex file
- All of the above
Which of the following flap designs is/are most recommended for microsurgery in endodontics?
- Partsch flap
- Sulcular full thickness flap
- Both 1 and 2
- Submarginal flap
- Semilunar flap
Apical surgery is least indicated in
- maxillary molars
- maxillary premolars
- mandibular molars
- mandibular premolars
- maxillary incisors
Reamers are used with
- pushing and rotating type of motion
- pulling and rasping type of motion
- pushing and rasping type of motion
- pulling and rotating type of motion
- all of the above
Which of the following statements is false about condensing osteitis?
- Condensing osteitis is the response to a low-grade, chronic inflammation of the periradicular area.
- Condensing osteitis is a mild irritation from pulpal disease that stimulates osteoblastic activity in the alveolar bone.
- Condensing osteitis is usually asymptomatic.
- Condensing osteitis is usually symptomatic.
- The mandibular posterior teeth are most frequently affected in condensing osteitis.
Which of the following is used for enlargement of the calcified canals?
- EDTA
- Calcium hydroxide
- Sodium hypochlorite
- Chlorhexidine digluconate
- Zinc oxide-euginol
Which of the following statements is/are false about cleaning and shaping of the canal?
- Shaping of canal is done after cleaning the apical 1/3rd to ensure patency.
- Shaping facilitates placement of instruments to the working length by increasing the coronal taper.
- Shaping permits more accurate assessment of the apical cross-section diameter of the canal.
- Only 1, 2 and 3
- Shaping is necessary for more calcifications that occur from coronal portion to the apex.
Which of the following statements is false about balance force technique?
- A flex-R file is used in balance force technique.
- The coronal third of the canal is prepared using the crown-down technique in balance force technique.
- Rotate the uncurved file clockwise from 90 to 180 degrees with light apical pressure to engage dentin in balance force technique.
- Rotate the uncurved file clockwise from 180 to 270 degrees with light apical pressure to engage dentin in balance force technique.
- Balance force technique has shown to reduce canal transportation and ledging.
Which of the following microorganisms is/are most commonly involved in failure of endodontically treated teeth due to extraradicular infection?
- Actinomyces israelii
- Propionibacterium propionicum
- Only 1 and 2
- Enterococcus faecalis
- Candida albicans